Interlocking roofing element



Aug. 4, 1925. 1,548,017

H. ABRAHAM INTERLO CKING ROOFING ELEMENT Filed May 8. 1922 INVENTOR Herbert Abraham,

ATTORNE Y Patented Aug. 4, 1925.

I 1,548,017 PATENT OFFICE.

HERBERT ABRAHAM, or

NEW YORK, N. 'Y. ASSIGFTDR TO THE RUBEBOID COMPANY, A. COBPQBATION OF NEW JERSEY.

INTERLOCKING ROOFING ELEMENT.

Application filed my 8,

To all whom it may concern:

Be it known that I, HERBERT ABRAHAM, a

citizen of the United States, residing at the and State of New York, have invented certain new and useful Improvements in Interlocking Roofing Elements, of which the following is a specification.

This invention relates to improvements in prepared roofing elements of interlocking type.-

The object of the invention is to provide roofing elements that can be laid in overlapping relation with the butts locked fast and without producing objectionable loose corners.

In the accompanying drawings city, county,

Figure 1 is a plan view of several elements laid in interlocked overlapping relation,

Fig. 2 is a plan view of an element consisizling of two integrally connected units, an

Fig. 3. is-a similar view of a unit element. My improvement is capable of embodiment in a roofing element consisting of a single unit or. any desired multiple of such units integrally connected, that is to say, the

' invention may be applied either in the form of an individual shingle or of a shinglestrip. y

Referring now to Figure 3, wherein I have shown a single unit, 1 indicates the body portion having a downward extension 2 at substantially the middle of its lower edge. The butt or lower end of the extension is formed with lateral projections 3 each provided with an upturned hook 4.

Oblique slits 5 are formed in the body at substantially the points where the sides of the extension merge into the lower edge of the body, directions. The length of each slit.5 is preferably such that the distance measured perpendicularly from the lower edge of the body 1 to the inner end of the slit 5 is substantially equal to the vertical distance from the lower edge of the extension 2 to the crotch of'the hook 4. The width of the body portion 1 between its upper and lower edges is preferably greater than the-distance from the lower edge of the extension 2 to the innermost ends of the slits 5.

Preferably, though not necessarily, each hook 4 forms an angle of with the contiguous side of the extension 2, and the o-int or extremity of the hook reaches upwar half said slits extending in diverging portion having 1922. Serial No. 559,159.

the vertical distance between the lower edge of the extension and .the body. 1

For the sake of convenience I have described the invention with particular referenceto the unit structure as in forming strips these units are repeated ad libitum and the same relationship of parts prevails throughout. For exam le, it will be noted that in Figure 2 which s ows a strip formed of two integrated units, each of the extensions 2 is disposed at substantially the middle of the lower edge of the corresponding body portion when considered in relation to an imaginary line separating the units.

The elements are formed by cutting a web of prepared roofing material into strips and dividing the strips into =lengths each containing any desired number of units. Elements composed of units of the preferred form herein described may be made from a minimum quantity of material and with a minimum waste. By referring to Fig. 2 it will be observed that the shape of each extension is complemental of that of the cut "constitute the extensions of a second strip.

The elements are laid'upon a roof in overlapping courses with the hooks 4 of the units of any course caught in the oblique slits 5 of the units vof an immediately underlying course, as shown in Fig. 1. This forms a roofing in which the butts of overlying units are hooked on to body portions of underlying units in such manner as to positively restrain the butts from bein dislodged accidentally and to avoid pro ucing any loose corners or portions that are liable to be raised bythe wind.-

What I claim is:

1. A roofing element consisting of one or more units, each unitv comprising a body an extension at substantially the middle of its lower edge, the lower end of the extension having on either side a projection formed with a hook, the body having an oblique slit at each of the points where the sides of the extension merge into the body, said slits-extending in diverging directions with respect to each other.

A roofing element consisting of one or more units, each unit comprising a body portion .having an extension at substantially the middle of its lower edge, the lower end of the extension having on either side a projection formed with a hook, each hook form- 1ng an angle with the contiguous side of the extension and having the crotch spaced downward from the lower edge of the body substantially the same distance that the tip is spaced upward from the lower edge of the extension, the body having an oblique slit at each of the points where the sides of the extension merge into the body, the slits extendin in diverging directions with respect to eac other.

3. A roofing element consisting of one or more units, each unit comprising a body portion having an extension at substantially the middle of its lower edge, the lower end of the extension havin on either side a. projection formed with a 100k, each hook forming an angle with the COIItI 'UOUS side of the extension and having the crotch spaced downward from the lower the body substantially the same distance that the tip is spaced upward from the lower ed e of the extension, the body having an ob ique slit at each of the points where the sides of the extension merge into the body, said slits extending in diverging directions with respect to each other, theinner end of each slit bein located upward of thelower edge of the iody a distance substantially equal to the vertical distance from the lower edge of edge of the extension to the crotch of the hook, and the length of the slit being substantially equal to the diagonal distance from the crotch to the lower corner of the respective projection.

4. A roofing element consisting'of one or more units, each unit comprising a body having an extension on its lower edge, the lower end of the extension having on either side a projection formed with a hook, the

.body having an oblique slit at each of the points where the sides of the extension merge into the body, said slits extending in diverging directions with respect to each other, the width of the body portion between its upper and lower edges being greater than the distance from the lower ed e of the extension to the innermost ends 0 the slits.

. 5. A roofing element comprising a body having a plurality of spaced extensions on its lower edge, the lower end of each extension having on either side a projection formed with a hook, the body having an oblique slit at each of the points where the sides of the extension merge into the body, the slits extending in diverging directions, the distance measured horizontally between the inner ends of the proximate slits being substantially equal to the horizontal dis tance between the crotches of the two hooks of each extension.

' HERBERT ABRAHAM. 

